how to open a 'csv file' like 'url launcher' in Flutter

问题

i converted list into File of .csv extension then tried OpenFile.open and ended up with error No permissions found in manifest for: 2, tried canLaunch and ended up with error name.csv exposed beyond app through Intent.getData(), Failed to handle method call

so how to open that csv file in any 3rd part application.

回答1:

You can copy paste run full code below
and make sure you have a file /sdcard/Download/sample.csv, see picture below
You also need CSV Viewer installed in your Emulator
code snippet

    final filePath = '/sdcard/Download/sample.csv';
    print('${filePath}');
    final message = await OpenFile.open(filePath);

working demo

device file explorer

full code

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:open_file/open_file.dart';

void main() => runApp(new MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _openResult = 'Unknown';

  Future<void> openFile() async {
    //final filePath = '/sdcard/Download/sample.pdf';
    final filePath = '/sdcard/Download/sample.csv';
    print('${filePath}');
    final message = await OpenFile.open(filePath);

    setState(() {
      _openResult = message;
    });
  }

  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Text('open result: $_openResult\n'),
              FlatButton(
                child: Text('Tap to open file'),
                onPressed: openFile,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

来源：https://stackoverflow.com/questions/59053056/how-to-open-a-csv-file-like-url-launcher-in-flutter

标签

csv

Flutter

launch